﻿/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2016-2021  Denis Kuzmin <x-3F@outlook.com> github/3F
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
*/

using System.Threading;
using System.Threading.Tasks;

namespace net.r_eg.DllExport.Wizard.Extensions
{
    internal static class ThreadingExtension
    {
        internal static CancellationTokenSource CancelAndResetIfRunning(this CancellationTokenSource cts, Task task, int signalLimit)
        {
            var ret = new CancellationTokenSource();
            if(cts == null) {
                return ret;
            }

            if(cts.Token.CanBeCanceled == true && task?.Status == TaskStatus.Running)
            {
                cts.Cancel();
                task.Wait(signalLimit);
            }

            cts.Dispose();
            return ret;
        }
    }
}